Posted by Anonymous on Tuesday, September 4, 2012 at 3:44pm.
degrease? You sure it's electric, and not plumbing?
the decrease is 80.77-69.06 = 11.71
as a percent of the bill, 11.71/80.77 = .1449 = 14.49%
%decrease=(decrement / initial)x 100
=(80.77-69.06)/80.77 x 100
=11.71/80.77 x100
=14.497%
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